Monongahela
Multiplexes

PA
88(N-S)/PA 837(N-S)
Duplex

Pennsylvania Routes 88 and 837 join for three miles through New Eagle
and Monongahela in Washington County.

Denny Pine 2003

The westernmost end of the Monongahela triplex is here in New Eagle.
PA 837 continues paralleling the Monongahela River to Pittsburgh,
while PA 88 takes a more northwesterly course.

Denny Pine 2003

Signs at the western split as seen from PA 88 south, which turns
right to join PA 837.

Denny Pine 2003

Old southbound reassurance shields near the western split. PA 88/PA
837 traverses New Eagle and Monongahela ahead.

PA
88(N-S)/PA 136(W-E)/PA
837(N-S) Triplex

The PA 88/PA 837 and PA 88/PA 136 duplexes join for a mile in Monongahela
in Washington County.

Denny Pine 2003

Continuing southbound on PA 88/PA 837, which actually heads almost
due eastward. PA 136 joins the duplex at this traffic signal (with
red poles!) near the New Eagle/Monongahela borough line.

Denny Pine 2003

New (right) and old (left) signs as seen by PA 136 east at the same
intersection. This intersection marks the western split of the triplex.

Denny Pine 2003

Reassurance shields eastbound.

PA
88(N-S)/PA 136(W-E)
Duplex

Pennsylvania Routes 88 and 136 join for a mile through Monongahela
in Washington County.

Denny Pine 2003

At the east end of the whole multiplex, PA 837 south and PA 136 east
split in turn from PA 88 south. PA 837 leaves first and passes under
PA 136 just to the left. A left on PA 136 east leads directly to a
bridge over the Monongahela River.

Denny Pine 2003

In the other direction, this view is from PA 88 northbound where
PA 136 west joins. PA 837 north joins at the next traffic signal.